D. Dashcle <d.daschle at hotmail.com> [Wed, Feb 10, 2010 at 01:13:58AM CET]:
>
> I'm interested in using R's plotting capabilities to try to generate
a graph showing the relationship/pairing frequency of words
appearing in a block of unstructured text. I don't have a specific
algorithm or approach in mind, just looking to portray text in an
interesting fashion. The output I'm hoping for is something like the
following called a "Phrase Network":
>>http://manyeyes.alphaworks.ibm.com/manyeyes/page/Phrase_Net.html
It looks like you need algorithms to position nodes in order to minimise
edge lengths and overlap. A well known program which does that is
graphviz. I am quite sure that no one has taken the effort to re-implement
the algorithm in R, but there are many R packages that interact with graphviz.
I would look for "graphviz" in www.rseek.org and procede from there.
--
Johannes Hüsing There is something fascinating about science.
One gets such wholesale returns of conjecture
mailto:johannes at huesing.name from such a trifling investment of fact.
http://derwisch.wikidot.com (Mark Twain, "Life on the Mississippi")